US7884899B2 - System for displaying images and method with a peripheral region having a mosaic color filter pattern thereon that has pillars and channels and an opening along its boundary - Google Patents
System for displaying images and method with a peripheral region having a mosaic color filter pattern thereon that has pillars and channels and an opening along its boundary Download PDFInfo
- Publication number
- US7884899B2 US7884899B2 US11/670,549 US67054907A US7884899B2 US 7884899 B2 US7884899 B2 US 7884899B2 US 67054907 A US67054907 A US 67054907A US 7884899 B2 US7884899 B2 US 7884899B2
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- US
- United States
- Prior art keywords
- color filter
- filter pattern
- pillars
- mosaic color
- mosaic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
- G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133388—Constructional arrangements; Manufacturing methods with constructional differences between the display region and the peripheral region
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
- G02F1/133519—Overcoatings
Definitions
- the invention relates to the display of images with the use of mosaic color filter patterns.
- a color filter In order to provide full-color imaging, a color filter (CF) is applied.
- the color filter In order to provide full-color imaging, a color filter (CF) is applied.
- the color filter In order to provide full-color imaging, a color filter (CF) is applied.
- the color filter is disposed on a display screen to alter the emitting light passing therethrough.
- RGB color filter arrays A number of methods are known conventionally for manufacturing RGB color filter arrays. Among them, photolithography processes provide advantages of high yield and efficiency, making such an industry choice. In such a process, red, green, and blue photosensitive compositions are coated on a substrate by spin coating. The coatings are then etched to form red, green, and blue color filter patterns on predetermined regions of the substrate. In that way, color filter arrays can be configured wherein red, green, and blue coloring layers are deployed adjacent to each other.
- the flatness of the rear color filter pattern depends on the shape of the front color filter pattern earlier formed on the substrate.
- the sidewall of the front color filter pattern is a discontinuous plane or has an opening
- the opening interferes with the subsequent spin coating process of the rear color filter pattern. This can result in undesirable line mura defects of the full-color flat panel display employing the color filter array.
- FIG. 1 is a schematic diagram depicting fabrication of a conventional color filter substrate by a spin coating process.
- a substrate 20 is disposed on a support 12 , and a first color photoresist composition 13 , provided by a dispenser 11 of a spin coater 10 , is injected on the substrate 20 having a display region 22 and a peripheral region 23 .
- a uniform coating of the first color photoresist composition 13 is formed on the substrate 20 .
- the coating is then patterned to form a front color filter pattern 30 .
- FIG. 2 is a close-up view of location L shown in FIG. 1 .
- the front color filter pattern 30 formed on a dummy region of the peripheral region 23 has an opening 21 .
- a second color photoresist composition 33 flows as indicated by the arrows over the front color filter pattern 30 . Since the second color photoresist composition 33 flowing into the opening 21 of the front color filter pattern 30 is blocked by the boundary 25 , a thicker rear color filter pattern 41 is formed, thereby producing an uneven rear color filter pattern 40 (comprising thicker rear color filter pattern 41 and thinner rear color filter pattern 42 ), further resulting in undesirable line mura defects of the full-color flat panel display.
- FIG. 3 is a photograph of a conventional full-color flat panel display, illustrating an example of such a line mura defect.
- An exemplary embodiment of such system for displaying images comprises a substrate having a display region and a peripheral region, and a mosaic color filter pattern formed in the peripheral region.
- the mosaic color filter pattern comprises a plurality of separated pillars and a plurality of channels adjacent to the pillars. Specifically the volume ratio between the pillars and the channels is 1:5 to 2:1, preferably 1:3 to 1:1.
- An exemplary embodiment of a method of fabricating a system for displaying images comprises providing a substrate having a display region and a peripheral region, and forming a mosaic color filter pattern on the peripheral region of the substrate, wherein the mosaic color filter pattern is formed by photolithography with a mosaic shadow mask.
- FIG. 1 is a schematic diagram for fabricating a conventional color filter substrate by a spin coating process.
- FIG. 2 is a close-up view schematic diagram of location L shown in FIG. 1
- FIG. 3 is a photograph of a conventional full-color flat panel display, illustrating line mura defect.
- FIG. 4 is a top-view schematic diagram of the system for displaying images according to an embodiment of the invention.
- FIG. 5 is a close-up view schematic diagram of location M shown in FIG. 4 .
- FIG. 6 schematically shows another embodiment of a system for displaying images.
- the system 100 for displaying images comprises a substrate 110 having a display region 112 and a peripheral region 114 .
- a full-color color filter pattern array comprising red color filter patterns 120 R, green color filter patterns 120 G, and blue color filter patterns 120 B is formed on the display region 112 .
- the peripheral region 114 has a dummy region, wherein one of the RGB color filter patterns 120 R, 120 G, and 120 B is also formed on the dummy region.
- the color filter pattern formed on the dummy region comprises a mosaic color filter pattern 121 having an opening 123 serving as an alignment key or a test key.
- FIG. 5 is a close-up view of location M shown in FIG. 4 . As shown in FIG.
- the mosaic color filter pattern 121 formed on the dummy region comprises a plurality of separated pillars 126 and a plurality of channels 127 adjacent to the pillars 126 , wherein the mosaic color filter pattern 121 is a front color filter pattern.
- the volume ratio between the pillars and the channels is 1:5 to 2:1.
- the shapes of the pillars are unlimited, and can be cylinder shaped, square shaped or combinations thereof, for example and the dimension of the pillars is between 20 ⁇ m ⁇ 20 ⁇ m and 100 ⁇ m ⁇ 100 ⁇ m, for example.
- a color photoresist composition 140 flows as indicated by the arrows over the front color filter pattern. Since the front color filter pattern is a mosaic color filter pattern 121 having a plurality of channels 127 passing therethrough, the photoresist composition 140 can flow through the channels 127 to form the rear color filter patterns 150 seemingly without restriction even with the mosaic color filter pattern 121 incorporating opening 123 . Due to the channels 127 of the mosaic color filter pattern 121 , the color photoresist composition 140 can pass through the mosaic color filter pattern 121 to form of the rear color filter pattern 150 without the typical blocking effect being caused by the boundary 160 . Therefore, the obtained rear color filter pattern 150 is relatively even film, thereby reducing or preventing a full-color flat panel display from presenting line mura defects.
- the volume ratio between the pillars and the channels can be 1:5 to 2:1, preferably 1:3 to 1:1. Further, in order to maintain the function of the mosaic color filter pattern, the volume ratio between the pillars and the channels is equal to or more than 1:3. It should be noted that the methods for forming mosaic color filter patterns are not restricted to the representative example described above. By way of example, processes suitable to use in flat display panel fabrication, such as photolithography with a mosaic shadow mask, can be used. Further, a normal color filter pattern can be formed simultaneously on the display region 112 of the substrate 110 when the mosaic color filter pattern is formed on the peripheral region 114 .
- the front color filter pattern comprising the normal color filter pattern within display region 112 and the mosaic color filter pattern within peripheral region 114 can be one of the RGB color filter patterns 120 R, 120 G, and 120 B, and can be formed by photolithography with a shadow mask with normal patterns and mosaic patterns.
- FIG. 6 schematically shows another embodiment of a system for displaying images which, in this case, is implemented as a display panel 200 or an electronic device 400 .
- the described active matrix organic electroluminescent device can be incorporated into a display panel that can be an OLED panel.
- the display panel 200 comprises an active matrix organic electroluminescent device, such as the organic electroluminescent diode 100 shown in FIG. 4 .
- the display panel 200 can form a portion of a variety of electronic devices (in this case, electronic device 400 ).
- the electronic device 400 can comprise the display panel 200 and an input unit 300 .
- the input unit 300 is operatively coupled to the display panel 200 and provides input signals (e.g., an image signal) to the display panel 200 to generate images.
- the electronic device 400 can be a mobile phone, digital camera, PDA (personal digital assistant), notebook computer, desktop computer, television, car display, or portable DVD player, for example.
- PDA personal digital assistant
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Optical Filters (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
Claims (11)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/670,549 US7884899B2 (en) | 2007-02-02 | 2007-02-02 | System for displaying images and method with a peripheral region having a mosaic color filter pattern thereon that has pillars and channels and an opening along its boundary |
JP2007333575A JP5311325B2 (en) | 2007-02-02 | 2007-12-26 | Image display system and manufacturing method thereof |
TW097100149A TWI385614B (en) | 2007-02-02 | 2008-01-03 | Systems for displaying images and methods for fabricating the same |
CN2008100006040A CN101236323B (en) | 2007-02-02 | 2008-01-10 | Systems for displaying images and methods for fabricating the same |
EP08100512A EP1953587B1 (en) | 2007-02-02 | 2008-01-15 | Systems for displaying images and methods for fabricating the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/670,549 US7884899B2 (en) | 2007-02-02 | 2007-02-02 | System for displaying images and method with a peripheral region having a mosaic color filter pattern thereon that has pillars and channels and an opening along its boundary |
Publications (2)
Publication Number | Publication Date |
---|---|
US20080186454A1 US20080186454A1 (en) | 2008-08-07 |
US7884899B2 true US7884899B2 (en) | 2011-02-08 |
Family
ID=39308020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/670,549 Active 2029-11-19 US7884899B2 (en) | 2007-02-02 | 2007-02-02 | System for displaying images and method with a peripheral region having a mosaic color filter pattern thereon that has pillars and channels and an opening along its boundary |
Country Status (5)
Country | Link |
---|---|
US (1) | US7884899B2 (en) |
EP (1) | EP1953587B1 (en) |
JP (1) | JP5311325B2 (en) |
CN (1) | CN101236323B (en) |
TW (1) | TWI385614B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101564925B1 (en) | 2009-01-14 | 2015-11-03 | 삼성디스플레이 주식회사 | Color-filter substrate and method of manufacturing the same |
CN117893952B (en) * | 2024-03-15 | 2024-06-28 | 视睿(杭州)信息科技有限公司 | Video mosaic defect detection method based on deep learning |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5617230A (en) | 1988-04-21 | 1997-04-01 | Asahi Glass Company Ltd. | Color liquid crystal display device with peripheral pixels in a light-shielded state |
US5699135A (en) * | 1994-10-18 | 1997-12-16 | Kabushiki Kaisha Toshiba | Reflection type liquid crystal display device and method of manufacturing the same |
US5936694A (en) | 1995-04-26 | 1999-08-10 | Canon Kabushiki Kaisha | Liquid crystal device and process for producing same |
US20030160916A1 (en) | 2002-02-28 | 2003-08-28 | Hidetoshi Nakagawa | Color display device |
US20050117093A1 (en) * | 2003-12-01 | 2005-06-02 | Lg.Philips Lcd Co., Ltd. | Color filter on thin film transistor type liquid crystal display device and method of fabricating the same |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01293304A (en) * | 1988-05-23 | 1989-11-27 | Dainippon Printing Co Ltd | Production of color filter |
JPH0996716A (en) * | 1995-09-29 | 1997-04-08 | Toshiba Corp | Color filter substrate |
JPH09197117A (en) * | 1996-01-19 | 1997-07-31 | Citizen Watch Co Ltd | Production of color filter |
JP4055453B2 (en) * | 2002-04-02 | 2008-03-05 | 凸版印刷株式会社 | Manufacturing method of color filter for transflective color liquid crystal display device |
TWI240107B (en) * | 2004-02-02 | 2005-09-21 | Toppoly Optoelectronics Corp | Transflective liquid crystal display |
KR20060070346A (en) * | 2004-12-20 | 2006-06-23 | 삼성전자주식회사 | Display device |
JP4235630B2 (en) * | 2005-07-11 | 2009-03-11 | 株式会社 日立ディスプレイズ | Color filter substrate and liquid crystal display device |
-
2007
- 2007-02-02 US US11/670,549 patent/US7884899B2/en active Active
- 2007-12-26 JP JP2007333575A patent/JP5311325B2/en not_active Expired - Fee Related
-
2008
- 2008-01-03 TW TW097100149A patent/TWI385614B/en not_active IP Right Cessation
- 2008-01-10 CN CN2008100006040A patent/CN101236323B/en active Active
- 2008-01-15 EP EP08100512A patent/EP1953587B1/en not_active Ceased
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5617230A (en) | 1988-04-21 | 1997-04-01 | Asahi Glass Company Ltd. | Color liquid crystal display device with peripheral pixels in a light-shielded state |
US5699135A (en) * | 1994-10-18 | 1997-12-16 | Kabushiki Kaisha Toshiba | Reflection type liquid crystal display device and method of manufacturing the same |
US5936694A (en) | 1995-04-26 | 1999-08-10 | Canon Kabushiki Kaisha | Liquid crystal device and process for producing same |
US20030160916A1 (en) | 2002-02-28 | 2003-08-28 | Hidetoshi Nakagawa | Color display device |
US20050117093A1 (en) * | 2003-12-01 | 2005-06-02 | Lg.Philips Lcd Co., Ltd. | Color filter on thin film transistor type liquid crystal display device and method of fabricating the same |
CN1624548A (en) | 2003-12-01 | 2005-06-08 | Lg.菲利浦Lcd株式会社 | Color filter on thin film transistor type liquid crystal display device and method of fabricating the same |
Non-Patent Citations (3)
Title |
---|
Chinese language office action dated Jul. 13, 2010. |
English language translation of abstract of CN 1624548 (published Jun. 8, 2005). |
EP Search Report mailed May 20, 2008. |
Also Published As
Publication number | Publication date |
---|---|
US20080186454A1 (en) | 2008-08-07 |
CN101236323A (en) | 2008-08-06 |
EP1953587A1 (en) | 2008-08-06 |
JP5311325B2 (en) | 2013-10-09 |
TW200834495A (en) | 2008-08-16 |
CN101236323B (en) | 2012-12-26 |
JP2008191651A (en) | 2008-08-21 |
EP1953587B1 (en) | 2012-11-21 |
TWI385614B (en) | 2013-02-11 |
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Owner name: TPO DISPLAYS CORP., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HSU, YAO-PIN;PENG, CHI-WEN;CHEN, CHENG-HSIN;AND OTHERS;REEL/FRAME:018845/0503 Effective date: 20070125 |
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Owner name: CHIMEI INNOLUX CORPORATION, TAIWAN Free format text: MERGER;ASSIGNOR:TPO DISPLAYS CORP.;REEL/FRAME:025737/0493 Effective date: 20100318 |
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